| Ref (type) | Population | Outcome, Interventions | Results and statistical analysis | Effect size | Favours |
| Live birth rates | |||||
|
Systematic review |
641 women with unexplained recurrent miscarriage 12 RCTs in this analysis |
Proportion of women having a live birth
205/316 (65%) with immunisation 195/325 (60%) with placebo |
RR 1.08 95% CI 0.96 to 1.22 |
Not significant |
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